CN205790851U - A kind of current loop shorting stub - Google Patents
A kind of current loop shorting stub Download PDFInfo
- Publication number
- CN205790851U CN205790851U CN201620490549.8U CN201620490549U CN205790851U CN 205790851 U CN205790851 U CN 205790851U CN 201620490549 U CN201620490549 U CN 201620490549U CN 205790851 U CN205790851 U CN 205790851U
- Authority
- CN
- China
- Prior art keywords
- plug
- short
- line
- outer tube
- short circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The utility model discloses a kind of current loop shorting stub, it is characterized in that the short-circuit line (3) that earth clip (6) is insulated by crust connects line plug (4), line plug (4) is provided with to spool (5), the short-circuit line (3) insulated line plug (4) by crust connects at least two short circuit plug (8), short circuit plug (8) is by the outer tube expansion (1) of copper and jackscrew (2) is threaded constitutes, the upper outside of outer tube expansion (1) is surrounded by insulating sheath (7), the lower end inner wall upper-thin-lower-thick of outer tube expansion (1) is provided with rounding bench-type otch (9), the lower end of jackscrew (2) is placed in rounding bench-type otch (9).This utility model simple in construction, practical and convenient, safe and reliable, applied widely, low cost, improve the operation stability of electrical network, ensure maintainer's personal safety.
Description
Technical field:
This utility model relates to current loop shorting stub, belongs to service work site technology field.
Background technology:
Generally require current loop short circuit in terminal block during daily station, change CT wiring and protective debugging.Owing to each producer's terminal block production standard and technique are different, cause terminal block socket not of uniform size, common shorting stub cannot be applicable to different manufacturers terminal block, shorting stub has pine to have tightly after inserting socket, it is impossible to meet short circuit requirement, easily causes current loop open circuit, produce high voltage, operating personnel's personal safety is threatened, easily burns CT and primary equipment after CT current loop open circuit, have a strong impact on equipment safe and stable operation.
Utility model content:
The purpose of this utility model is to overcome the deficiency of prior art and provides a kind of simple in construction, practical and convenient, safe and reliable, applied widely, and low cost improves the operation stability of electrical network, ensures the current loop shorting stub of maintainer's personal safety.
The purpose of this utility model can be reached by following measure: a kind of current loop shorting stub, it includes earth clip, it is characterized in that the short-circuit line that earth clip is insulated by crust connects line plug, line plug is provided with spool, the short-circuit line insulated line plug by crust connects at least two short circuit plug, the short-circuit line insulated by crust respectively between short circuit plug is attached, short circuit plug is by the outer tube expansion of copper and jackscrew is threaded constitutes, the upper outside of outer tube expansion is surrounded by insulating sheath, the lower end inner wall upper-thin-lower-thick of outer tube expansion is provided with rounding bench-type otch, the lower end of jackscrew is placed in rounding bench-type otch.
In order to realize the purpose of this utility model further, the quantity of described short circuit plug is 4, being respectively used to connect A phase connection terminal, B phase connection terminal, C phase connection terminal, N phase connection terminal, the short-circuit line wherein insulated by crust for connecting the short circuit plug of N phase connection terminal is connected with to line plug.
This utility model can produce following good effect compared with the prior art: this utility model is by the application to setscrew principle; outer tube expansion lower end is strutted by regulation jackscrew; short circuit plug can be made to be reliably connected in terminal block; it is applicable to the different model terminal block socket that any producer is produced; ensure the reliable short circuit in CT loop; avoid primary current and become exciting curent completely; high potential was produced at secondary coil; threaten personal safety; and cause instrument, protection device, the probability of transformer secondary damage, effectively prevent CT current loop from opening a way.And this device can connect earth clip by butt tube, it is to avoid the generation of virtual earth phenomenon, it is ensured that ground connection is reliable, substantially increases the job safety of maintainer, it is ensured that the safe and stable operation of converting equipment.
This utility model can effectively solve current station working site because of the unreliable various drawbacks caused of current loop shorting stub short circuit, and it has:
1. simple in construction, easy to use.
This utility model, by being combined with jackscrew by outer for copper tube expansion, uses setscrew principle, struts outer tube expansion inferior end notch by regulation jackscrew, short circuit plug just can be made to fixedly secure in the terminal block that socket size is different, it is not necessary to carry out complex operations.It addition, copper outer tube expansion and jackscrew small volume, lighter in weight, use more convenient.
The most applied widely.
The various model terminal block produced by different manufacturers installed in being generally applicable to current transformer substation control screen.
3. drawing materials conveniently, cost is relatively low.
Outer tube expansion of the present utility model and jackscrew may utilize copper and be simply processed into, and material is common, with low cost.
4. safety improves.
Before not using this kind of current loop shorting stub, tradition shorting stub can not adjust plug size, there will be and loosen and obscission after being connected to terminal block, causes short circuit unreliable, causes the serious person and the generation of power grid accident.Use after this utility model current loop shorting stub, it is to avoid short-circuit line is connected the generation of insecure phenomenon and improves the operation stability of electrical network with terminal block.
Accompanying drawing illustrates:
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of short circuit plug of the present utility model；
Fig. 3 is the structural representation being connected spool part with short circuit plug of the present utility model；
Detailed description of the invention: below in conjunction with the accompanying drawings detailed description of the invention of the present utility model is elaborated:
nullEmbodiment: a kind of current loop shorting stub (seeing Fig. 1-Fig. 3)，It includes earth clip 6，The short-circuit line 3 that earth clip 6 is insulated by crust connects line plug 4，Line plug 4 is provided with spool 5，The short-circuit line 3 insulated line plug 4 by crust connects at least two short circuit plug 8，In the present embodiment, the quantity of short circuit plug 8 is 4，It is respectively used to connect A phase connection terminal、B phase connection terminal、C phase connection terminal、N phase connection terminal，The short-circuit line 3 wherein insulated by crust for connecting the short circuit plug 8 of N phase connection terminal is connected with to line plug 4，The short-circuit line 3 insulated by crust respectively between short circuit plug 8 is attached，Short circuit plug 8 is by the outer tube expansion 1 of copper and jackscrew 2 is threaded constitutes，The upper outside of outer tube expansion 1 is surrounded by insulating sheath 7，The lower end inner wall upper-thin-lower-thick of outer tube expansion 1 is provided with rounding bench-type otch 9，The lower end of jackscrew 2 is placed in rounding bench-type otch 9.
Above embodiment is only to be described preferred implementation of the present utility model; other preferred implementation is the most tired at this to be stated; and not scope of the present utility model is defined; on the premise of without departing from this utility model design spirit; various deformation that the technical solution of the utility model is made by this area ordinary skill technical staff and improvement, all should fall within the protection domain that claims of the present utility model determine.
Claims (2)
1. a current loop shorting stub, it includes earth clip (6), it is characterized in that the short-circuit line (3) that earth clip (6) is insulated by crust connects line plug (4), line plug (4) is provided with to spool (5), the short-circuit line (3) insulated line plug (4) by crust connects at least two short circuit plug (8), the short-circuit line (3) insulated by crust respectively between short circuit plug (8) is attached, short circuit plug (8) is by the outer tube expansion (1) of copper and jackscrew (2) is threaded constitutes, the upper outside of outer tube expansion (1) is surrounded by insulating sheath (7), the lower end inner wall upper-thin-lower-thick of outer tube expansion (1) is provided with rounding bench-type otch (9), the lower end of jackscrew (2) is placed in rounding bench-type otch (9).
A kind of current loop shorting stub the most according to claim 1, the quantity that it is characterized in that described short circuit plug (8) is 4, being respectively used to connect A phase connection terminal, B phase connection terminal, C phase connection terminal, N phase connection terminal, the short-circuit line (3) wherein insulated by crust for connecting the short circuit plug (8) of N phase connection terminal is connected with to line plug (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620490549.8U CN205790851U (en) | 2016-05-26 | 2016-05-26 | A kind of current loop shorting stub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620490549.8U CN205790851U (en) | 2016-05-26 | 2016-05-26 | A kind of current loop shorting stub |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205790851U true CN205790851U (en) | 2016-12-07 |
Family
ID=58111214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620490549.8U Expired - Fee Related CN205790851U (en) | 2016-05-26 | 2016-05-26 | A kind of current loop shorting stub |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205790851U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106645824A (en) * | 2016-12-22 | 2017-05-10 | 国家电网公司 | Three-point short wire for test and series set thereof |
| CN107271730A (en) * | 2017-06-19 | 2017-10-20 | 国网辽宁省电力有限公司抚顺供电公司 | Transformer station's phoenix terminal block secondary circuit tests special magnetic suction type plug |
| CN112490739A (en) * | 2020-12-09 | 2021-03-12 | 常州同惠电子股份有限公司 | Locking mechanism for testing low-voltage end of voltage-withstanding instrument |
-
2016
- 2016-05-26 CN CN201620490549.8U patent/CN205790851U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106645824A (en) * | 2016-12-22 | 2017-05-10 | 国家电网公司 | Three-point short wire for test and series set thereof |
| CN107271730A (en) * | 2017-06-19 | 2017-10-20 | 国网辽宁省电力有限公司抚顺供电公司 | Transformer station's phoenix terminal block secondary circuit tests special magnetic suction type plug |
| CN112490739A (en) * | 2020-12-09 | 2021-03-12 | 常州同惠电子股份有限公司 | Locking mechanism for testing low-voltage end of voltage-withstanding instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 Termination date: 20170526 |